Gas or vapor engine, particularly steam engine



May 3 1927.

C. L. cooK @As on vAPon ENGINE, PARTIQULARLY STEEN ENGINE 5 Sheets-Sheet 1 Filed pct. '2o. 1920 SH01 nu,

May 3 1927.

' C. L. COOK GAS ORVVAWR ENGINE, PARTICULARLY STEAI ENGINE Filed pc+ 20. 1920 5 sheets-sheet 2 .Illu HHHHH. Hl IIIPIIIIIHH. H. Il w l H nu h l Ill l Q EN. h

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5 Sheets-SheetA y3 gnou/Hof y c. L. cooK @As on vuon aucuns. unucumw swam ananas x-ned oct. zo. 1920 C. L. COOK GAS OR'JM'PR ENGINE, PARTI-CULARLY STEAM ENGINE Png-d our. 2o. 1920 5 sheets-sheet 4 1,627,427 May 3 1927' c. l.. cooK GAS 0R VAPOR ENGIN, PARTICULARLY STEAM ENGINE Filed Oct. 20. 1920 5 Sheets-Sheet 5 CZwelel? 6700715 Patented May 3, 1927.

" UNITED PATE-.Nr

CHARLES COOK, OF LOUISVILLE, TUCKY.

GAS 0R varon ENdiNE, rART'icuI-.ARLY STEAM ENGINE.

Apiicamn inea oetoberao, i920. seriai No. 418,293'.

My invention relates to compound --steam or gas engines, pa'rtici'ila'rly to 1those `used locomotives. An object of lmy 'invention is to provide valve controllingvmeans such that tlieer'igine may ,be operated as a-*compound high andlow pressure engine, asa high pressure engi-ne of maximum power, oi"v as ya high pressure engine of "lesser power.

Another object .off my invention is to provide such means that will be simple inf construction but efficient in operation, and can beread-ily and `quickly `changed from one type to another. y

Other objects Willbe apparentirom the following detailed description andthe appended claims. i

lin the dra-wings: y l y v 1F igure lisa vertical :longitudinal section through the device, withl'the parts setto act as a' compound high and low pressure engine and with the reciprocating valve mechanism in its extreme right hand position.

`Figure 2 Vis a similar lView vviththe mechanism `in .its extreme left handfposition. y

. Figure 3 is a similaiview with f-thepats set to operate as a high pressure 'engine of reduced powerl and :the reciprocating valve mechanism in its extreme `right hand position. f igui'evtlis a similan'view with mech'- anism in :its .extreme left kklia-nd positioiii` Figui-e 5 is asimilan view with thejpjarts set to operate as.aliigltipressureengine of maximum eiiciency and the reciprocating i valve-ineclianism in its fezitre'in'e right hand position. Y t y Fig-ure 6 is asimilar view with the' mechanism in its eXtreme left hand position.

Figure 7 is a sectionof the cylinder, steain chest and auxiliary valve chest taken at right ang-les lto the previous figures, the right hand half showing a section through the large diameter cylinder andthe lefthand half showing a section through Vthe small r diameter cylinder.

Figure 8 isianend view of thedevice.` Figure' 9 shows a .perspective view 'of part 4of Ythe `reciprocating valve mechanism. with .parts ibrokenaway to show-the internal construction. j y A.

Figure 10 shows a perspective view of one end of the steam chest, with parts .broken away `to show `the reciprocable valve mechanism. t i y f i l The steam .chest f1 is ,provided .with 'are- `c'ilifroca'ble sleeve 2, which 'acts as a valve and may beset to a plurality 'of-positions through any desired mechanism.- As shown in Figure 10, this may "compriseahandle 41 pvoted at 42 to any desired-support and having a pivotal connection at 43with' a rod 36 lattached by a spider 37to the sleeve 2. Asteani pipe `may connect with this steam chest as indicated 'at n`6. In r`the llower 'wallv olf the sleeve 2 are formed a series of 'openings 5.13, 14, 15, 16 and v17 for purposes hereinafter described."

Theflower wall of the steam chest :1 'is preferably `also 'the upper wall of the v'mainv valve chamber v3.4 Iii this wall areopenings 22, 23, 24, land 25 with which communicate under varying conditions the'openings '13 'to 17 inclusive above mentioned. The two 1series 'of :openings provide di-'reet communicatioii from the lsteam 'chest 1 'to the valve chamber 3.

" In the valve chamber '3 is yaltubei'f mount `ed in three pairsoifdisks 19,20 and 21,ft1 hek disks ie, iajao'and si at one end Grahamber and bears in the other dislr`21. cenyt`i`-a`l sleeve 133 andattadlied sleeves` 5 at each end 'tliereof'are rotatable onthe Ioutside citt the tubey '4. Arms' 38 yattached to the 'vailfve stein '34 :have screwy bolts 39 'attached thereto which move inv slots in `the tube'l1anderefattach'ed to the `sleeires .5 and. rhandle 40 at the endof the vvalve stein 34 'permits rotary adjustinentofjtlie sleeves as desired. In fthe opposite end of p the `valve "chamber '3 isa'rod 135 attached to the-fenddiskfl and 'having sliding bearing in the end *of "the chamber 3. The-entire internal valve meehanism is thus ie'oipio'cated lengthwiseof :the chamber 3 by -thefiod 35 whichfis' given its imiproea'ting motion by the usual eccentric mechanism operated rfrom Ithe lpistonuod lf12 of the engine, `but which forms no part of my invention. Thefe'zihaust pipe V7 is positioned `atftlie `lon"gitudinal ceiter 'of 'the' valve (chamber 3 sleeves and 33 .may also setft'orfacp-1iirality ot positions entirely independent of the other adjustment.

The compound cylinder consists of the central cylinder 9 of larger diameter and two cylinders 8 of smaller diameter extending in line therewith from each end. In the central cylinder is the double faced piston 11 and extending trom each side thereof and fixed thereto are pistons ot smaller diameter and ot sui'licient length to maintain a constant bearing in eachv smaller cylinder and perform the functions ot a piston rod. Fixed to one ot the pistons 10 is the main piston rod 12. y

The. tube. 4 has openings 26, 26 and 31, and the sleeves 5 are provided with openings 27 and 27 that may be brought into register with the openings 26 and 26', while the sleeve 33 lhas an opening 32 that may be brought into register with the opening 31, all as desired and by rotation of the valve stem 34. V'Vhen 26 and 26 register with 27 and27, then 31 and 32 do not register, and vice versa. The lower wall ot the valve chamber is provided with pairs lof openings 28, 29 and 30 leading into the cylinders.

Vhen the sleeve 2 in the steam chest 1 is in set position to the left and the openings 26 and 26 register with 27 and 27, as shown in Figures 1 and 2 ot the drawings, the parts are in position to operate as a compound high and low pressure engine. In JFigure 1 the reciprocating valve mechanism is shown at the extreme right of its stroke. The passage 13 is closed and the steam is admitted through port 14, passage 22 to the chamber between disks 19 and 20 and thence through passage 30 to the small cylinder at one end. This admission ot high pressure steam continues through afixed portion of the stroke of the piston in one direction as is usual in steam engines. At the same time the high pressure steam in the small cylinder 8 at the opposite end, which has completed its work, passes through the port 29 into the valve chamber between the disks 18 and 19 at that end, thence through tube 4, openings 26 and 27 into the chamber between the disks 20 and 21 and through the port 28 to the lett hand side ot the large piston 11, which now functions as a low pressure piston. On the other side of the piston 11 the low pressure steam exhausts through the passage 28 into the chamber between the disks 21 and 21, and thence through the exhaust pipe 7 into the outer air. n the return stroke a corresponding` action takes place, the steam being admitted through passages 17, and communicating passages as described above.

When the sleeve 2 is set in its middle position lengthwise ot the steam chest, the parts are in position to operate as a high pressure enginelot reduced power. This is shown in Figures 3 and 4. In Figure 3 when the reciprocating valve mechanism is at its right hand position, the passage 13 is closed and the openings 26, 26; 27, 27, and 31, 32 are all out of register. High pressure steam is admitted directly through ports 14, 23

and 28 to the large diameter cylinder. On the other side of the piston the high pressure exhausts through the port 28 into the chamber between disks 21 and 21, exactly as in the preceding position. A corresponding action takes place on the return stroke of the piston, the steam being admitted through passages 15, 24 and corresponding passages.

Then the sleeve 2 in the steam chest 1 is in its extreme right hand position, the parts are in position to operate as a high pressure engine of maximum power. This is shown in Figures 5 and 6. At this time the ports 26 and 26 are out of' register with 27 and 27 but 31 and 32 are in registering position. Steam now passes through 13, 22 and 30 into the lett hand cylinder 8 and at the same time through 14, 23 and 28 into the leit hand side of the cylinder.9. The exhaust from the small cylinder takes place through port 29, chamber between disks 18 and 19, tube 4, ports 31 and 32 into chamber between disks 21 and 21, and thence into the exhaust pipe 7. The exhaust from the large cylinder takes place through port 28 into chamber between disks 21 and exhaust pipe 7. A corresponding action takes place on the return stroke, the steam being admitted through passages 15 and 24 and through 16 and 25 into the corresponding ports and chambers.

It is evident from the above description that the sliding valve 2 may be set to three different positions, and that the. rotary valve comprising the sleeves 5 and 33 may alsoy be set to three positions, and that by a suitable choice of these positions, the engine may be made to operate in three distinct ways. Obviously various details of structure may be changed or modified without departing from the spirit ot the invention, and the invention is limited only by the terms of the appended claims.

I claim as my invention:

1. A gas or vapor engine comprising a compound cylinder, a compound reciprocating piston provided with piston heads of ditlierent diameters, and valve control mechanism tor directing the gas or vapor either wholly into the larger diameter portions of the cylinder or wholly into the smaller diameter portions of the cylinder, said mechanism comprising a reciprocable valve adapted to be set in diierent positions and a reciprocating valve provided with a rotary control sleeve adapted to be set in different positions.

2. A gas or vapor engine comprising a compound cylinder, a compound reciprocating piston provided with piston heads o'':

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diferent diameters, and valve control mechanism for directing the gas or vapor either Wholly into the larger diameter portions of the cylinder, or Wholly into the smaller diameter portions of the cylinder, or into both larger diameter and smaller diameterI portions of either end thereof simultaneously, said mechanism comprising a reciprocable valve adapted to be set in different positions and a reciprocating valve provided With a rotary control sleeve adapted to be set in different positions.

i 3. A gas or vapor engine comprising a compound cylinder formed With a central cylinder of larger diameter and cylinders of smaller diameter extending from each end thereof, a compound piston comprising a two-faced piston head in said large cylinder and a cylindrical extension into each smaller cylinder providing piston heads therein, and valve control mechanism comprising a reciprocable valve and a reciprocating valve pro` vided With a rotary control sleeve.

4. A gas or vapor engine comprising a multiple chambered cylinder, a multiple faced reciprocating piston, and valve control mechanism for directing motive Huid in different paths to the chambers of the cylinders comprising a cylinder With ports and a reciprocable sleeve having ports adapted to be brought into and out of register with the first named ports and a reciprocating valve comprising an auxiliary cylinder having ported sleeves, one of which isk rotatable.

5. A gas or vapor engine comprising a multiple chambered cylinder, a multiple sliding valve therein that may be set to either of three positions, a reciprocating valve mechanism, and means for directing motiveV fluid to thegchamber of the cylinder comprising an auxiliary rotary valve Within said valve mechanism that may be set to either of three positions.

7. A gas or vapor engine lcomprising a multiple chambered cylinder, aA multiple facedreciprocating piston, and means for directing motive fluid to the chamber ofthe cylinder, vcomprising a steamchest, a sliding valve therein settable to either of three positions, a reciprocating valve mechanism having three chambers over each end of said compound piston, andan auxiliary rotary valve mechanism Within said reciprocating valve mechanism that may be set to either of three positions.

CHARLES LEE COOK. 

